I have the same sound on my Vee2 2014.
For a long time couldn't find out where it was coming from. Then I talked to one rider with 45 years of riding experience and and over 30 motorcycles owned. He said, you've washed your bike at pressure washer station and then it appeared few weeks after. Yes. He was right. It appeared just few weeks after first pressure washing. He explained that he had the same problem on some previous bikes, regardless of the brand. He said that the detergent from pressure washer gets into the front wheel bearing and sometimes into the rear one. Nothing to do, it's not worth changing the bearings so I learned to live with it. He said he doesn't do that for years now and if he has to use pressure washer, he choose only the option with clean water and he has never had the problem again.
So, I'll know in few months after I trade my ride for 2017 Vee2.
And yes, I owned the Glee before Vee2 and never went to pressure washing and I've never had the noise.